usb: add USBDescriptor, use for device descriptors.

This patch adds a new type for the binary representation of usb
descriptors.  It is put into use for the descriptor generator code
where the struct replaces the hard-coded offsets.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 26 insertions, 0 deletions

diff --git a/hw/usb/desc.h b/hw/usb/desc.h
index d6e07ea5d2..c5a242e3c1 100644
--- a/hw/usb/desc.h
+++ b/hw/usb/desc.h
@@ -3,6 +3,32 @@
 
 #include <inttypes.h>
 
+/* binary representation */
+typedef struct USBDescriptor {
+    uint8_t                   bLength;
+    uint8_t                   bDescriptorType;
+    union {
+        struct {
+            uint8_t           bcdUSB_lo;
+            uint8_t           bcdUSB_hi;
+            uint8_t           bDeviceClass;
+            uint8_t           bDeviceSubClass;
+            uint8_t           bDeviceProtocol;
+            uint8_t           bMaxPacketSize0;
+            uint8_t           idVendor_lo;
+            uint8_t           idVendor_hi;
+            uint8_t           idProduct_lo;
+            uint8_t           idProduct_hi;
+            uint8_t           bcdDevice_lo;
+            uint8_t           bcdDevice_hi;
+            uint8_t           iManufacturer;
+            uint8_t           iProduct;
+            uint8_t           iSerialNumber;
+            uint8_t           bNumConfigurations;
+        } device;
+    } u;
+} QEMU_PACKED USBDescriptor;
+
 struct USBDescID {
     uint16_t                  idVendor;
     uint16_t                  idProduct;